What does the depolarization of the transverse tubules (T-tubules) promote?

A) binding of acetylcholine to ligand-gated sodium ion channels
B) release of calcium from the sarcoplasmic reticulum
C) entry of sodium ions into the muscle fiber through voltage-gated sodium ion channels
D) release of acetylcholine from vesicles in the motor neuron into the synaptic cleft


Answer: B

Anatomy & Physiology

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Removal of intervertebral disc material by perforating and scraping out of its contents is called:

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What are the possible fates of pyruvic acid in the body? What is the primary determinant of the fate of pyruvic acid? What is the fate of compounds to which pyruvic acid may be converted?

What will be an ideal response

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A defect in nitric oxide synthetase gene may result in reduced ________ of cerebral arteries since nitric oxide production would be impaired.

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What are mature bone cells in lacunae called?

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